Bug 1440411 - Remove the obsolete gfx.font_loader.families_per_slice pref (no longer used by any code). r=jrmuizel

gfx/thebes/gfxPlatformFontList.cpp

@@ -95,7 +95,6 @@ const gfxFontEntry::ScriptRange gfxPlatformFontList::sComplexScriptRanges[] = {
 };
 
 // prefs for the font info loader
-#define FONT_LOADER_FAMILIES_PER_SLICE_PREF "gfx.font_loader.families_per_slice"
 #define FONT_LOADER_DELAY_PREF              "gfx.font_loader.delay"
 #define FONT_LOADER_INTERVAL_PREF           "gfx.font_loader.interval"
 
@@ -187,7 +186,7 @@ gfxPlatformFontList::MemoryReporter::CollectReports(
 gfxPlatformFontList::gfxPlatformFontList(bool aNeedFullnamePostscriptNames)
     : mFontFamiliesMutex("gfxPlatformFontList::mFontFamiliesMutex"), mFontFamilies(64),
       mOtherFamilyNames(16), mBadUnderlineFamilyNames(8), mSharedCmaps(8),
-      mStartIndex(0), mIncrement(1), mNumFamilies(0), mFontlistInitCount(0),
+      mStartIndex(0), mNumFamilies(0), mFontlistInitCount(0),
       mFontFamilyWhitelistActive(false)
 {
     mOtherFamilyNamesInitialized = false;
@@ -1683,9 +1682,6 @@ gfxPlatformFontList::CleanupLoader()
 void
 gfxPlatformFontList::GetPrefsAndStartLoader()
 {
-    mIncrement =
-        std::max(1u, Preferences::GetUint(FONT_LOADER_FAMILIES_PER_SLICE_PREF));
-
     uint32_t delay =
         std::max(1u, Preferences::GetUint(FONT_LOADER_DELAY_PREF));
     uint32_t interval =

gfx/thebes/gfxPlatformFontList.h

@@ -589,7 +589,6 @@ protected:
     // data used as part of the font cmap loading process
     nsTArray<RefPtr<gfxFontFamily> > mFontFamiliesToLoad;
     uint32_t mStartIndex;
-    uint32_t mIncrement;
     uint32_t mNumFamilies;
 
     // xxx - info for diagnosing no default font aborts

modules/libpref/init/all.js

@@ -853,7 +853,6 @@ pref("gfx.bundled_fonts.force-enabled", false);
 pref("gfx.missing_fonts.notify", false);
 
 // prefs controlling the font (name/cmap) loader that runs shortly after startup
-pref("gfx.font_loader.families_per_slice", 3); // read in info 3 families at a time
 #ifdef XP_WIN
 pref("gfx.font_loader.delay", 120000);         // 2 minutes after startup
 pref("gfx.font_loader.interval", 1000);        // every 1 second until complete