CppTools: Add CppToolsBridge

We broke the dependency of
BaseEditorDocumentProcessor *BaseEditorDocumentProcessor::get(const QString &filePath)

It's hiding static calls and it is much easier to do it that way than to
provide a reference to every user. It's also possible to exchange it with
different implementations for different test cases.

Change-Id: Ic74699b45948e8b48f7efb6a1b295ba2641b8951
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/plugins/cpptools/cpptools.pro

@@ -66,7 +66,10 @@ HEADERS += \
     symbolfinder.h \
     symbolsfindfilter.h \
     typehierarchybuilder.h \
-    senddocumenttracker.h
+    senddocumenttracker.h \
+    cpptoolsbridge.h \
+    cpptoolsbridgeinterface.h \
+    cpptoolsbridgeqtcreatorimplementation.h
 
 SOURCES += \
     abstracteditorsupport.cpp \
@@ -130,7 +133,9 @@ SOURCES += \
     symbolfinder.cpp \
     symbolsfindfilter.cpp \
     typehierarchybuilder.cpp \
-    senddocumenttracker.cpp
+    senddocumenttracker.cpp \
+    cpptoolsbridge.cpp \
+    cpptoolsbridgeqtcreatorimplementation.cpp
 
 FORMS += \
     completionsettingspage.ui \