Begin tracking driver info in GrGLContextInfo

src/gpu/gl/GrGLUtil.h

Index: src/gpu/gl/GrGLUtil.h
diff --git a/src/gpu/gl/GrGLUtil.h b/src/gpu/gl/GrGLUtil.h
index 3646de548ece515f4cd1f5f926e42561d6fed0e9..3a7f4505f7453efbc640d9a32e164f359e76d76a 100644
--- a/src/gpu/gl/GrGLUtil.h
+++ b/src/gpu/gl/GrGLUtil.h
@@ -18,14 +18,18 @@ class SkMatrix;
 
 typedef uint32_t GrGLVersion;
 typedef uint32_t GrGLSLVersion;
+typedef uint32_t GrGLDriverVersion;
 
 #define GR_GL_VER(major, minor) ((static_cast<int>(major) << 16) | \
                                  static_cast<int>(minor))
 #define GR_GLSL_VER(major, minor) ((static_cast<int>(major) << 16) | \
                                    static_cast<int>(minor))
+#define GR_GL_DRIVER_VER(major, minor) ((static_cast<int>(major) << 16) | \
+                                        static_cast<int>(minor))
 
 #define GR_GL_INVALID_VER GR_GL_VER(0, 0)
-#define GR_GLSL_INVALID_VER GR_GL_VER(0, 0)
+#define GR_GLSL_INVALID_VER GR_GLSL_VER(0, 0)
+#define GR_GL_DRIVER_UNKNOWN_VER GR_GL_DRIVER_VER(0, 0)
 
 /**
  * The Vendor and Renderer enum values are lazily updated as required.
@@ -50,6 +54,13 @@ enum GrGLRenderer {
     kOther_GrGLRenderer
 };
 
+enum GrGLDriver {
+    kMesa_GrGLDriver,
+    kChromium_GrGLDriver,
+    kNVIDIA_GrGLDriver,
+    kUnknown_GrGLDriver
+};
+
 ////////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -98,10 +109,15 @@ enum GrGLRenderer {
 GrGLVersion GrGLGetVersionFromString(const char* versionString);
 GrGLStandard GrGLGetStandardInUseFromString(const char* versionString);
 GrGLSLVersion GrGLGetGLSLVersionFromString(const char* versionString);
-bool GrGLIsMesaFromVersionString(const char* versionString);
 GrGLVendor GrGLGetVendorFromString(const char* vendorString);
 GrGLRenderer GrGLGetRendererFromString(const char* rendererString);
-bool GrGLIsChromiumFromRendererString(const char* rendererString);
+
+void GrGLGetDriverInfo(GrGLStandard standard,
+                       GrGLVendor vendor,
+                       const char* rendererString,
+                       const char* versionString,
+                       GrGLDriver* outDriver,
+                       GrGLDriverVersion* outVersion);
 
 // these variants call glGetString()
 GrGLVersion GrGLGetVersion(const GrGLInterface*);