Move mimetype definitions to plugin specs

- Avoids the hassle of QRC files and manually registering mime types
- Avoids performance regressions because of mime types that are
  registered after mime database has been used
- Makes it technically possible to detect that a disabled plugin could
  handle a mime type if it was enabled

Change-Id: I373008b1b56e9c6b4853055f20b3eeb112a6eff9
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/tasklist/TaskList.json.in

@@ -14,5 +14,17 @@
     ],
     \"Description\" : \"Use .tasks-files to populate the Issues view.\",
     \"Url\" : \"http://www.qt.io\",
-    $$dependencyList
+    $$dependencyList,
+
+    \"Mimetypes\" : \"
+    <?xml version=\'1.0\' encoding=\'UTF-8\'?>
+    <mime-info xmlns=\'http://www.freedesktop.org/standards/shared-mime-info\'>
+        <mime-type type=\'text/x-tasklist\'>
+            <sub-class-of type=\'text/plain\'/>
+            <comment>Qt Creator task list file</comment>
+            <glob pattern=\'*.tasks\'/>
+            <glob pattern=\'*.tasks.txt\'/>
+        </mime-type>
+    </mime-info>
+    \"
 }

src/plugins/tasklist/TaskList.mimetypes.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
-    <mime-type type="text/x-tasklist">
-        <sub-class-of type="text/plain"/>
-        <comment>Qt Creator task list file</comment>
-        <glob pattern="*.tasks"/>
-        <glob pattern="*.tasks.txt"/>
-    </mime-type>
-</mime-info>

src/plugins/tasklist/tasklist.pro

@@ -8,5 +8,3 @@ HEADERS += tasklistplugin.h \
 SOURCES += tasklistplugin.cpp \
     stopmonitoringhandler.cpp \
     taskfile.cpp \
-
-RESOURCES += tasklist.qrc

src/plugins/tasklist/tasklist.qbs

@@ -14,7 +14,6 @@ QtcPlugin {
         "stopmonitoringhandler.h",
         "taskfile.cpp",
         "taskfile.h",
-        "tasklist.qrc",
         "tasklistconstants.h",
         "tasklistplugin.cpp",
         "tasklistplugin.h",

src/plugins/tasklist/tasklist.qrc

@@ -1,5 +0,0 @@
-<RCC>
-    <qresource prefix="/tasklist">
-        <file>TaskList.mimetypes.xml</file>
-    </qresource>
-</RCC>

src/plugins/tasklist/tasklistplugin.cpp

@@ -35,7 +35,6 @@
 #include <projectexplorer/session.h>
 #include <projectexplorer/task.h>
 #include <projectexplorer/taskhub.h>
-#include <utils/mimetypes/mimedatabase.h>
 
 #include <QDir>
 #include <QMessageBox>
@@ -194,8 +193,6 @@ bool TaskListPlugin::initialize(const QStringList &arguments, QString *errorMess
     //: Category under which tasklist tasks are listed in Issues view
     TaskHub::addCategory(Constants::TASKLISTTASK_ID, tr("My Tasks"));
 
-    MimeDatabase::addMimeTypes(QLatin1String(":tasklist/TaskList.mimetypes.xml"));
-
     m_fileFactory = new IDocumentFactory;
     m_fileFactory->addMimeType(QLatin1String("text/x-tasklist"));
     m_fileFactory->setOpener([this](const QString &fileName) {