[llvm-cov] Use less space to describe source names

In r279628, we made SourceCoverageView list the binary associated with a
view and started adding labels (e.g "Source: foo" or "Function: bar") to
everything. Condense this information a bit to unclutter reports.

llvm-svn: 280896
diff --git a/llvm/tools/llvm-cov/SourceCoverageViewHTML.cpp b/llvm/tools/llvm-cov/SourceCoverageViewHTML.cpp
index 52e594f..ca3f350 100644
--- a/llvm/tools/llvm-cov/SourceCoverageViewHTML.cpp
+++ b/llvm/tools/llvm-cov/SourceCoverageViewHTML.cpp
@@ -341,12 +341,10 @@
 void SourceCoverageViewHTML::renderSourceName(raw_ostream &OS, bool WholeFile,
                                               unsigned FirstUncoveredLineNo) {
   OS << BeginSourceNameDiv;
-  // Render the source name for the view.
-  OS << tag("pre", escape(getNativeSourceName(), getOptions()));
+  std::string ViewInfo = escape(
+      WholeFile ? getVerboseSourceName() : getSourceName(), getOptions());
+  OS << tag("pre", ViewInfo);
   if (WholeFile) {
-    // Render the object file name for the view.
-    OS << tag("pre",
-              escape("Binary: " + getOptions().ObjectFilename, getOptions()));
     // Render the "Go to first unexecuted line" link for the view.
     if (FirstUncoveredLineNo != 0) { // The file is not fully covered
       std::string LinkText =