Collect GL_EXTENSIONS string in GPUInfo and display it in about:gpu page....

chrome/common/gpu_info.cc

Index: chrome/common/gpu_info.cc
===================================================================
--- chrome/common/gpu_info.cc	(revision 72055)
+++ chrome/common/gpu_info.cc	(working copy)
@@ -16,6 +16,7 @@
       gl_version_string_(""),
       gl_vendor_(""),
       gl_renderer_(""),
+      gl_extensions_(""),
       can_lose_context_(false) {
 }
 
@@ -67,6 +68,10 @@
   return gl_renderer_;
 }
 
+std::string GPUInfo::gl_extensions() const {
+  return gl_extensions_;
+}
+
 bool GPUInfo::can_lose_context() const {
   return can_lose_context_;
 }
@@ -113,6 +118,10 @@
   gl_renderer_ = gl_renderer;
 }
 
+void GPUInfo::SetGLExtensions(const std::string& gl_extensions) {
+  gl_extensions_ = gl_extensions;
+}
+
 void GPUInfo::SetCanLoseContext(bool can_lose_context) {
   can_lose_context_ = can_lose_context;
 }