Fix diagnostics and log messages in about:gpu.

BUG=78189

Review URL: http://codereview.chromium.org/6877028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@82662 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 32 insertions, 16 deletions

diff --git a/content/common/gpu/gpu_info.cc b/content/common/gpu/gpu_info.cc
index f067baf..afd7686 100644
--- a/content/common/gpu/gpu_info.cc
+++ b/content/common/gpu/gpu_info.cc
@@ -23,41 +23,55 @@ bool GPUInfo::Merge(const GPUInfo& other) {
   if (!finalized) {
     finalized = other.finalized;
     initialization_time = other.initialization_time;
-    if (driver_vendor.empty() && !other.driver_vendor.empty()) {
+
+    if (driver_vendor.empty()) {
+      changed |= driver_vendor != other.driver_vendor;
       driver_vendor = other.driver_vendor;
-      changed = true;
     }
-    if (driver_version.empty() && !other.driver_version.empty()) {
+    if (driver_version.empty()) {
+      changed |= driver_version != other.driver_version;
       driver_version = other.driver_version;
-      changed = true;
     }
-    if (driver_date.empty() && !other.driver_date.empty()) {
+    if (driver_date.empty()) {
+      changed |= driver_date != other.driver_date;
       driver_date = other.driver_date;
-      changed = true;
     }
-    if (pixel_shader_version.empty())
+    if (pixel_shader_version.empty()) {
+      changed |= pixel_shader_version != other.pixel_shader_version;
       pixel_shader_version = other.pixel_shader_version;
-    if (vertex_shader_version.empty())
+    }
+    if (vertex_shader_version.empty()) {
+      changed |= vertex_shader_version != other.vertex_shader_version;
       vertex_shader_version = other.vertex_shader_version;
-    if (gl_version.empty())
+    }
+    if (gl_version.empty()) {
+      changed |= gl_version != other.gl_version;
       gl_version = other.gl_version;
-    if (gl_version_string.empty())
+    }
+    if (gl_version_string.empty()) {
+      changed |= gl_version_string != other.gl_version_string;
       gl_version_string = other.gl_version_string;
-    if (gl_vendor.empty())
+    }
+    if (gl_vendor.empty()) {
+      changed |= gl_vendor != other.gl_vendor;
       gl_vendor = other.gl_vendor;
-    if (gl_renderer.empty() && !other.gl_renderer.empty()) {
+    }
+    if (gl_renderer.empty()) {
+      changed |= gl_renderer != other.gl_renderer;
       gl_renderer = other.gl_renderer;
-      changed = true;
     }
-    if (gl_extensions.empty())
+    if (gl_extensions.empty()) {
+      changed |= gl_extensions != other.gl_extensions;
       gl_extensions = other.gl_extensions;
+    }
     can_lose_context = other.can_lose_context;
 #if defined(OS_WIN)
     if (dx_diagnostics.values.size() == 0 &&
-        dx_diagnostics.children.size() == 0)
+      dx_diagnostics.children.size() == 0) {
       dx_diagnostics = other.dx_diagnostics;
+      changed = true;
+    }
 #endif
   }
   return changed;
 }
-
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 1a04e1b..e5bf6d6 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -115,6 +115,8 @@ bool GpuChildThread::OnControlMessageReceived(const IPC::Message& msg) {
 }
 
 void GpuChildThread::OnInitialize() {
+  logging::SetLogMessageHandler(GpuProcessLogMessageHandler);
+
   // Load the GL implementation and locate the bindings before starting the GPU
   // watchdog because this can take a lot of time and the GPU watchdog might
   // terminate the GPU process.