Bug 1484624 - Don't create texture sources if the compositor doesn't have a GL context. r=sotaro

UltraBlame original commit: 389ffe7befeeee61318659e3c76b4ae2b93bb446

Author: marco-c

gfx/layers/opengl/CompositorOGL.cpp

@@ -12217,6 +12217,18 @@ TextureFlags
 aFlags
 )
 {
+if
+(
+!
+gl
+(
+)
+)
+{
+return
+nullptr
+;
+}
 return
 MakeAndAddRef
 <
@@ -12242,6 +12254,18 @@ TextureHost
 aTexture
 )
 {
+if
+(
+!
+gl
+(
+)
+)
+{
+return
+nullptr
+;
+}
 BufferTextureHost
 *
 bufferTexture
@@ -12749,6 +12773,18 @@ DataSourceSurface
 aSurface
 )
 {
+if
+(
+!
+gl
+(
+)
+)
+{
+return
+nullptr
+;
+}
 return
 MakeAndAddRef
 <

gfx/layers/opengl/TextureHostOGL.cpp

@@ -2020,6 +2020,15 @@ bool
 aBlocking
 )
 {
+if
+(
+!
+gl
+(
+)
+|
+|
+!
 gl
 (
 )
@@ -2028,7 +2037,63 @@ gl
 MakeCurrent
 (
 )
+)
+{
+/
+/
+We
+use
+this
+function
+to
+decide
+whether
+we
+can
+unlock
+the
+texture
+/
+/
+and
+clean
+it
+up
+.
+If
+we
+return
+false
+here
+and
+for
+whatever
+reason
+/
+/
+the
+context
+is
+absent
+or
+invalid
+the
+compositor
+will
+keep
+a
+/
+/
+reference
+to
+this
+texture
+forever
+.
+return
+true
 ;
+}
 if
 (
 !
@@ -2104,6 +2169,15 @@ bool
 aInit
 )
 {
+if
+(
+!
+gl
+(
+)
+|
+|
+!
 gl
 (
 )
@@ -2112,7 +2186,12 @@ gl
 MakeCurrent
 (
 )
+)
+{
+return
+false
 ;
+}
 if
 (
 aInit